main_url="https://movie.douban.com/top250"
header_str= "User-Agent:Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36 Edg/125.0.0.0"
xpath_movie_url="//div[@class='hd']/a/@href"
xpath_movie_name_year="//h1/span/text()"
#获取主要背景信息的xpath
xpath_main_info="//div[@id='info']//text()"
#获取评分和评价人数
xpath_score_count="//div[@class='rating_self clearfix']//text()"
